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/// <summary>**************************************************************************
/// 
/// $Id: ICCCurveType.java,v 1.1 2002/07/25 14:56:36 grosbois Exp $
/// 
/// Copyright Eastman Kodak Company, 343 State Street, Rochester, NY 14650
/// $Date $
/// ***************************************************************************
/// </summary>
using System;
using ICCProfile = CSJ2K.Icc.ICCProfile;
namespace CSJ2K.Icc.Tags
{
        
        /// <summary> The ICCCurve tag
        /// 
        /// </summary>
        /// <version>   1.0
        /// </version>
        /// <author>    Bruce A. Kern
        /// </author>
        public class ICCCurveType:ICCTag
        {
                
                //UPGRADE_NOTE: Final was removed from the declaration of 'eol '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
                private static readonly System.String eol = System.Environment.NewLine;
                /// <summary>Tag fields </summary>
                //UPGRADE_NOTE: Final was removed from the declaration of 'type '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
                new public int type;
                /// <summary>Tag fields </summary>
                //UPGRADE_NOTE: Final was removed from the declaration of 'reserved '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
                public int reserved;
                /// <summary>Tag fields </summary>
                //UPGRADE_NOTE: Final was removed from the declaration of 'nEntries '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
                public int nEntries;
                /// <summary>Tag fields </summary>
                //UPGRADE_NOTE: Final was removed from the declaration of 'entry '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
                public int[] entry_Renamed_Field;
                
                /// <summary>Return the string rep of this tag. </summary>
                public override System.String ToString()
                {
                        System.Text.StringBuilder rep = new System.Text.StringBuilder("[").Append(base.ToString()).Append(" nentries = ").Append(System.Convert.ToString(nEntries)).Append(", length = " + System.Convert.ToString(entry_Renamed_Field.Length) + " ... ");
                        return rep.Append("]").ToString();
                }
                
                /// <summary>Normalization utility </summary>
                public static double CurveToDouble(int entry)
                {
                        return (double) entry / 65535.0;
                }
                
                /// <summary>Normalization utility </summary>
                public static short DoubleToCurve(double entry)
                {
                        //UPGRADE_WARNING: Data types in Visual C# might be different.  Verify the accuracy of narrowing conversions. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1042'"
                        return (short) System.Math.Floor(entry * 65535.0 + 0.5);
                }
                
                /// <summary>Normalization utility </summary>
                public static double CurveGammaToDouble(int entry)
                {
                        return (double) entry / 256.0;
                }
                
                
                /// <summary> Construct this tag from its constituant parts</summary>
                /// <param name="signature">tag id
                /// </param>
                /// <param name="data">array of bytes
                /// </param>
                /// <param name="offset">to data in the data array
                /// </param>
                /// <param name="length">of data in the data array
                /// </param>
                protected internal ICCCurveType(int signature, byte[] data, int offset, int length):base(signature, data, offset, offset + 2 * ICCProfile.int_size)
                {
            type = ICCProfile.getInt(data, offset);
            reserved = ICCProfile.getInt(data, offset + ICCProfile.int_size);
            nEntries = ICCProfile.getInt(data, offset + 2 * ICCProfile.int_size);
                        entry_Renamed_Field = new int[nEntries];
                        for (int i = 0; i < nEntries; ++i)
                entry_Renamed_Field[i] = ICCProfile.getShort(data, offset + 3 * ICCProfile.int_size + i * ICCProfile.short_size) & 0xFFFF;
                }
                
                
                /// <summary>Accessor for curve entry at index. </summary>
                public int entry(int i)
                {
                        return entry_Renamed_Field[i];
                }
                
                /* end class ICCCurveType */
        }
}

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